Training status

Check your VO2 max graph. Do you see any values? Do you see power data in your activities? 

I see power data on every bike ride. My vo2 max hasn’t been updated since my last run on July 12.

I see now that Edge 130 doesn't support the training status function. 

If you log your rides with the 935 you should get a training status for your rides. 

I always log my rides with my 935. It works perfectly with run trainings but it’s like it doesn’t do the same with the bike. I understood that it was normal without the power meter pedals, but even with them, I get nothing.

Could you post a link to one of your recent rides? Maybe that way we can see if there is anything wrong. 

connect.garmin.com/.../9284905838

Everything looks very good. I see no reason to why you shouldn't get a VO2 max for that ride.

The VO2 max is calculated on the device so if it works you should see it on the watch.

There are two things I usually suggest for most issues with any device.

1. Connect to Garmin Express on a computer, do a sync that way and install any updates (you are running the latest version so there shouldn't be any updates, but check anyway).
2. Do a soft reset. That means that you hold the light button (top left) until the watch shuts down. It will not remove anything on the watch. I usually do it on my FR945 every other week or so just in case.

The following condition from the document My Recorded Activity Did Not Update My VO2 Max Estimate could be the culprit:

• Your heart rate must be elevated to at least 70% of your maximum heart rate for at least 20 minutes continuously.

Not sure what your general max HR is, I see just the max HR of 192 bpm in this activity, but even if it were just those 192 bpm (perhaps the global max HR is even more), you would have to stay above 134 bpm continuously for 20 min. Seeing the HR graph, it looks like the HR drops rather often below that threshold. 

You could try disabling the auto max HR detection, and assigning it manually a bit lower than the reality (you do not need to adjust the HR zones, if you do not wish).